如何在groovy中读取json数据

Question

团队

我正在调用 gerrit 服务器，返回的是我相信的 json。由此，我尝试读取字段，但在第一步本身中出现错误。有什么提示吗？我对 gerrit 的调用并存储其响应是成功的，但进一步阅读它是我的挑战。

输出为

Raw Response: )]}'
{"cherrypick":{"method":"POST","label":"Cherry Pick","title":"Cherry pick change to a different branch","enabled":true},"description":{"method":"PUT","label":"Edit Description","enabled":true},"rebase":{"method":"POST","label":"Rebase","title":"Rebase onto tip of branch or parent change.","enabled":true,"enabled_options":["rebase","rebase_on_behalf_of_uploader"]}}

Also:   org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: 49aaf903-ceee-4e7e-83d8-642316a37b95
groovy.json.JsonException: Unable to determine the current character, it is not a string, number, array, or object

The current character read is ')' with an int value of 41
Unable to determine the current character, it is not a string, number, array, or object
line number 1
index number 0
)]}'
^
    at groovy.json.internal.JsonParserCharArray.decodeValueInternal(JsonParserCharArray.java:206)
    at groovy.json.internal.JsonParserCharArray.decodeValue(JsonParserCharArray.java:157)

我的詹金斯文件是

    stages {
        stage('Read Json From Gerrit') {
            steps {
                script {
                        def response = sh(
                            script: "curl -u ${GERRIT_HTTP_USR}:${GERRIT_HTTP_PSW} -s '$GERRIT_API_URL_CHANGES/$GERRIT_CHANGE_NUMBER/revisions/$GERRIT_PATCHSET_REVISION/actions'",
                            returnStdout: true
                            ).trim()
                        echo "Raw Response: ${response}"
                        def json = new JsonSlurper().parseText(response)

我只想看看启用是否为真？这个

"enabled":true

Answer 1

您遇到的错误是由于 JSON 响应开头的额外字符造成的：

)]}'

。这是处理 JSONP 响应或包装 JSON 响应的某些 API 时的常见问题。

要解决此问题，您需要在解析 JSON 之前删除不需要的字符。修改方法如下：

import groovy.json.JsonSlurper

stages {
    stage('Read Json From Gerrit') {
        steps {
            script {
                def response = sh(
                    script: "curl -u ${GERRIT_HTTP_USR}:${GERRIT_HTTP_PSW} -s
                    '$GERRIT_API_URL_CHANGES/$GERRIT_CHANGE_NUMBER/revisions/$GERRIT_PATCHSET_REVISION/actions'",
                    returnStdout: true
                ).trim()

                echo "Raw Response: ${response}"

                // Remove the unwanted characters at the start
                def jsonResponse = response.replaceAll(/^\)\]}'.*/, '')

                // Parse the cleaned JSON response
                def json = new JsonSlurper().parseText(jsonResponse)

                // Check if 'enabled' is true
                def isEnabled = json.rebase?.enabled
                echo "Is Enabled: ${isEnabled}"
            }
        }
    }
}